Drill bit Dedra WDB12140, diameter 12 mm, length 140 mm, for wood, 1 pc

Dedra WDB12140 is a single woodworking drill bit with a 12 mm diameter and a total length of 140 mm. Designed for use with standard handheld and bench drills, this solid-shank bit is intended for drilling clean holes in soft and hard wood species during carpentry, furniture assembly and general DIY tasks. The single-piece design provides straightforward compatibility with common drill chucks and simplifies replacement when a dedicated size is required.

Advantages

The Dedra WDB12140 offers a consistent 12 mm hole size and a 140 mm length that reaches through thicker panels or allows deeper hole placement compared with standard short bits. Its solid shank construction ensures stable seating in drill chucks and reduces wobble during rotation. The bit’s geometry is optimised for wood, promoting efficient chip removal and cleaner entry and exit holes when used at appropriate drilling speeds.

Suitable for

• Drilling clearance and dowel holes in solid wood and engineered wood
• Furniture assembly and joinery work
• Carpentry and general household DIY projects
• Creating holes for fittings, plugs and fasteners in wooden components

Key specifications

• Diameter: 12 mm
• Total length: 140 mm
• Material compatibility: wood (solid and engineered)
• Shank type: solid round shank for standard chucks
• Pack quantity: 1 piece

How to use

Secure the Dedra WDB12140 in the drill chuck and tighten firmly to minimise runout. Mark the drilling point on the workpiece and, if required, use a centre punch or pilot mark to prevent bit walking. Start drilling at low to moderate speed, increasing rpm as the bit engages the material; apply steady axial pressure without forcing the bit. For deep holes, withdraw the bit periodically to clear wood chips and maintain cutting efficiency. When drilling through thin panels, support the exit side to reduce splintering.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses and hearing protection. Select drill speeds appropriate for the wood type—lower speeds for hard woods and higher speeds for softwoods—and avoid overheating the bit. Store the bit dry and protected to prevent corrosion and keep the cutting edges sharp for consistent performance.